The NFL and the NFL Players Association are investigating an incident in which an apparent head injury to New England Patriots wide receiver DeVante Parker went unnoticed by medical personnel and spotters, according to league spokesman Brian McCarthy.
Parker appeared shaky on his feet during the first quarter of the Patriots’ game against the Arizona Cardinals on Monday night. The game would have continued if it hadn’t been for Patriots teammate Nelson Agholor, who noticed Parker was shaky and signaled the officials to stop the game just before the next snap.
Many people were perplexed as to why the league’s ATC spotters, whose job it is to monitor the game for possible head injuries, did not signal to halt play so Parker could receive medical attention. McCarthy claims that the league is attempting to “understand the sequence of events.”
“Get on with your f**kin job, @nfl,” Parker said in an Instagram story on Tuesday. “Thank you for informing my brother about the situation, @nelsonagholor 15.”
Patriots head coach Bill Belichick was asked about an incident during his weekly radio interview with WEEI 93.7.
“When those plays happen, the player on the field and his teammates around him have a better idea if a player’s… how he’s doing compared to somebody that’s 30, 40 yards away,” Belichick said.
“You know, if you’re sure there’s something wrong, then you address it, the players should address it right away, but if you get a hit and it stuns you for a second or two then everything pops back into normal, then that happens out there plenty of times too. I don’t believe you want people running around after every play. But, in the end, I believe the players made the correct decision.”

CNN has reached out to the NFL Players Association for more information.

The Patriots defeated the Cardinals 27-13 in a game in which Arizona quarterback Kyler Murray tore his ACL in the first quarter. Murray will now be out for the rest of the season.